Paving composition.



- No Drawing.

To all whom it may concern:

Philadelphia, in the county of Philadelphia desired.

ela'stic'ity in all temperatures and agin eliminated, the roads built thereof wil 'be dust. note the variations in the weights and meascounts the road body cannot disintegrate.

ing my bituminous composition, accuracy "is attained so thatall the parts of a crushed condition in a mixin machlne and coated No water is used with the calcium oxid at UNITED STATES PATENT OFFICE.

JOSEPH HAY AMIES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB ,TO THE AMIES ASPHALT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF SOUTH DAKOTA.

PAVING COMPOSITION.

Be it known that I, JOSEPH HAY AMIns, a citizen of the United States, residing at and State of Pennsylvania, have invented a certain new and useful Improved Paving Composition, of which the following is a specification.

Attempts to secure inherent stability of the mass in a composition for road making have been many. These attempts have however heretofore failed to secure the object I will now describe and finally claim a process by which I secure perfect inherent stability, that'is, my composition when laid and properly compressed is entirely without voids, and therefore the body of the composition is hermetically sealed,as it were, and on this account as well as on other ac- As thesaid composition maintains uniform 13 very durable.

I crush stone 1n ordlnary crushers 1n ton or mesh. All the various sizes of the crushed stone are jgparated. I measure and in each ton, and last of all I weigh the stone I do this over and over again and ures of different grades of stones. In makton of stone will beused in each separate batch. of mixing. These are laced in a cold with alight oil, also 111 a-cold condition. I then mix in a heavy hot asphaltic or bituminous cement, or the like, and then mix in adue quantityof crushed-calcium oxid.

Specification of Letters Patent. Patented Sept. 21, 1909 Application filed February 20, 1909. Serial No. 479,258.

should be laid and compressed before the slaking of the calcium oxid begins, and this may be easily done because the slaking of the calcium oxid will not usually begin for several hours after the mixing has been completed. When it is laid and compressed, as described above, and the fine grains of the crushed calcium oxid begin to slake they will exert internal expansion and this expansion will be sufficiently powerful to move the fine articles of the stone dust and 'the smaller slzes of the crushed stone and force them into all the unfilled voids of the composition and the result will be a road topping of perfect inherent stability. I depend for this result largely upon the action of the calcium oxid in combination with proper rolling and compressing of the said composition to provide a perfect topping p ssessing perfect inherent stability for a bituminous road way.

What I claim is The herein described [process of making a) composition for paving which consists in selecting properly graded crushed stone and stone dust, coating the same with a light'oil, then mixing this mass with a heavy asphaltic cement then mixing therewith a due quantity of calcium oxid, and preferably laying the said composition prior to the slaking 0 the calcium oxid, substantially as and for the purposes set forth.

In testimony whereof I hereunto sign my, name.

JOSEPH HAY AMIES.

v In presence of- S. F. Koon, WILLIAM J. JACKSON. 

